Abstract
Polyaniline has been synthesized in the galleries of fluorohectorite, a two-dimensional mica-type layered silicate. Intercalation of aniline in the intracrystalline region of Cu-exchanged fluorohectorite results in oxidative polymerization to polyaniline (emeraldine base form) as demonstrated by electronic, infrared and Raman spectroscopy and x-ray diffraction data. The intercalated insulating form of polyaniline becomes conducting on exposure to HCl. In-plane electrical conductivity data measured in the temperature range 274 to 573 K show a complex thermally activated behavior with room temperature conductivity 0.05 Ohm−1cm−1. The polyaniline/layered silicate hybrids represent a new class of nanocomposites consisting of synthetic conductors with molecular dimensions contained in a quasi twodimensional environment of a crystalline host.
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References
T.A. Skotheim Ed., Handbook of Conducting Polymers, Vol. 1, (Marcel Dekker, New York, 1986).
M.G. Kanatzidis, H.O. Marcy, W.J. McCarthy, C.R. Kannewurf and T.J. Marks, Solid State Ionics, 32/33, 594 (1989).
M.G. Kanatzidis, C.-G. Wu, H.O. Marcy and C.R. Kannewurf, J. Am. Chem. Soc., 111, 4139 (1989).
P. Enzel and T. Bein, J. Phys. Chem., 93, 6270 (1989)
P. Enzel and T. Bein, J. Chem. Soc., Chem. Commun., 1326 (1989)
M.M. Mortland and T.J. Pinnavaia, Nature, 229, 75 (1971)
J.P. Rupert, J. Phys. Chem., 77, 784 (1973).
Y. Soma, M. Soma and I. Harada, J. Phys. Chem., 88, 3034 (1984).
T.J. Pinnavaia, Science, 220, 365 (1983).
J.C Chiang and A.G. MacDiarmid, Synth. Met., 13, 193 (1986).
K. Uvdal, M.A. Hasan, J.O. Nilsson, W.R. Salaneck, I. Lundstrom, A.G. MacDiarmid, A. Ray and A. Angelopoulos, in Electronic Properties of Conjugated Polymers, edited by H. Kuzmany, M. Mehring and S. Roth (Springer-Verlag, Berlin, 1987).
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Mehrotra, V., Giannelis, E.P. Conducting Molecular Multilayers: Intercalation of Conjugated Polymers in Layered Media. MRS Online Proceedings Library 171, 39–44 (1989). https://doi.org/10.1557/PROC-171-39
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DOI: https://doi.org/10.1557/PROC-171-39